Date to Day of Week
Find what day of the week any date falls on. Shows day name, day of year, ISO week number, and whether it is a leap year.
How to Use Date to Day of Week
The Date to Day of Week calculator tells you what day of the week any date falls on. Enter any date and instantly see the full day name (Monday through Sunday), along with useful additional information: the day of the year (1-366), ISO week number, whether the year is a leap year, and how many days are in that month. Perfect for planning events, checking historical dates, verifying birthdays, or satisfying curiosity about what day a specific date was or will be. Works for any valid date — past, present, or future. All calculations happen locally in your browser.
Step-by-Step Instructions
- Enter a date using the date picker
- Click Find Day of Week to calculate
- View the day name and additional date information
- Copy the results using the copy button
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